# Recent Publications

## Myrta Gruening

< more | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | more >

1. Title: Erratum: Second harmonic generation in h-BN and MoS2 monolayers: Role of electron-hole interaction

Author(s): Gruening M., Attaccalite C.

Physical Review B, 90, No. 19, pp. 199901- (November 2014)

2. Title: Second harmonic generation in h-BN and MoS2 monolayers: Role of electron-hole interaction

Author(s): Gruening M., Attaccalite C.

Physical Review B (Rapid), 89, pp. 081102- (2014)

We study second-harmonic generation in h-BN and MoS$_2$ monolayers using a novel \emph{ab initio} approach based on Many-body theory. We show that electron-hole interaction doubles the signal intensity at the excitonic resonances with respect to the contribution from independent electronic transitions. This implies that electron-hole interaction is essential to describe second-harmonic generation in those materials. We argue that this finding is general for nonlinear optical properties in nanostructures and that the present methodology is the key to disclose these effects.